Purification of anhydrous hydrogen fluoride

Details Purification of anhydrous hydrogen fluoride Purification of anhydrous hydrogen fluoride

1982-07-29

1984-01-03

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 71, B01D 5322

Patent

active

044240678

ABSTRACT:
The arsenic trifluoride content of anhydrous hydrogen fluoride is reduced by diffusion in one or more stages through a non-porous fluoride-resistant film, such as a thin fluoropolymer film.

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patent: 4083941 (1978-04-01), Jayawant
patent: 4230463 (1980-10-01), Henis et al.
patent: 4268279 (1981-05-01), Shindo et al.
S. Walter et al., Chem. Eng. Prog., 585-590 (Nov. 1950).

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